check_gamecontroller.c

#include <stdint.h>
#include <stdbool.h>
#include <stdlib.h>
#include <SDL2/SDL.h>

/*
 *
 * STRUCTS, Enums and Typedefs
 *
 */

typedef int8_t          i8;
typedef int16_t         i16;
typedef int32_t         i32;
typedef int64_t         i64;

typedef uint8_t         u8;
typedef uint16_t        u16;
typedef uint32_t        u32;
typedef uint64_t        u64;

typedef unsigned int    uint;
typedef float           f32;
typedef double          f64;


struct player {
    SDL_GameController *gamecontroller;
    SDL_Joystick *joystick;
    SDL_Rect viewport;
};

enum PLAYER {
    PLAYER_1,
    PLAYER_2,
    PLAYER_3,
    PLAYER_4,
    PLAYER_TOTAL
};

/*
 *
 * GLOBAL STUFF
 *
 * */

SDL_Window          *window;
SDL_Renderer        *renderer;
struct player       player[PLAYER_TOTAL];

u16 screen_width = 1280;    // 16
u16 screen_height = 720;    //  9



int main(void) { 
    u32 exitval = EXIT_FAILURE;

    SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO);

    int sdl_flags = SDL_INIT_VIDEO | SDL_INIT_JOYSTICK | SDL_INIT_HAPTIC;
    int rnd_flags = SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC;
    bool is_running = true;

    SDL_Init(sdl_flags);
    SDL_GameControllerAddMappingsFromFile("gamecontrollerdb.txt");
    window = SDL_CreateWindow("Gamepads and viewports", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, screen_width, screen_height, SDL_WINDOW_SHOWN);
    renderer = SDL_CreateRenderer(window, -1, rnd_flags);
    SDL_RenderSetLogicalSize(renderer, screen_width, screen_height);
    SDL_SetRenderDrawColor(renderer, 0x00, 0x00, 0x00, SDL_ALPHA_OPAQUE);

    SDL_Event event;
    const char *name;
    const char *description;
    int devid;
    while(is_running == true)
    {

        while(SDL_PollEvent(&event)) 
        {
            switch(event.type)
            {
                case SDL_QUIT:
                    is_running = false;
                    break;
                case SDL_KEYDOWN:
                    if (event.key.keysym.sym == SDLK_ESCAPE) {
                        is_running = false;
                    }
                    break;
                case SDL_CONTROLLERDEVICEADDED:
                    SDL_Log("Game controller device %d added.\n", (int) event.cdevice.which);
                    break;
                case SDL_CONTROLLERDEVICEREMOVED:
                    SDL_Log("Game controller device %d removed.\n", (int) event.cdevice.which);
                    break;
                case SDL_CONTROLLERBUTTONDOWN:
                case SDL_CONTROLLERBUTTONUP:
                    SDL_Log("Controller button %s %s\n", SDL_GameControllerGetStringForButton((SDL_GameControllerButton)event.cbutton.button), event.cbutton.state ? "pressed" : "released");
                    break;
                case SDL_JOYDEVICEADDED:
                    devid = event.jdevice.which;
                    SDL_Log("Joystick device %d inserted.\n", devid );
                    if (SDL_IsGameController(devid))
                    {
                        name = SDL_GameControllerNameForIndex(devid);
                        switch (SDL_GameControllerTypeForIndex(devid))
                        {
                            case SDL_CONTROLLER_TYPE_XBOX360: 
                                description = "Xbox 360 Controller"; 
                                break;
                            case SDL_CONTROLLER_TYPE_XBOXONE:
                                description = "Xbox One Controller"; 
                                break;
                            case SDL_CONTROLLER_TYPE_PS3:
                                description = "PS3 Controller";
                                break;
                            case SDL_CONTROLLER_TYPE_PS4:
                                description = "PS4 Controller";
                                break;
                            case SDL_CONTROLLER_TYPE_NINTENDO_SWITCH_PRO:
                                description = "Nintendo Switch Pro Controller";
                                break;
                            default:
                                description = "Generic Game Controller";
                                break;
                        }
                        //SDL_GameController *ctrl = SDL_GameControllerOpen(devid);
                        // if(!ctrl)
                        // {
                        //     SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
                        //             "%s: SDL_GameControllerOpen(%d): %s\n",
                        //             __func__, devid, SDL_GetError());
                        // } else {
                        // SDL_Log("Controler name: %s desc:%s opened\n", name, description);
                        // }
                    } else {
                        name = SDL_JoystickNameForIndex(devid);
                        description = "Joystick";
                    }
                    break;
                case SDL_JOYDEVICEREMOVED:
                    SDL_Log("Joystick device %d removed.\n", (int) event.jdevice.which);
                    break;
                case SDL_JOYBUTTONDOWN:
                case SDL_JOYBUTTONUP:
                    SDL_Log("Joy %i - Button: %d %s\n", 
                            event.jdevice.which,
                            event.jbutton.button,
                            event.jbutton.state ? "pressed" : "released");
                    break;
                default:
                    break;
            }
        }

        SDL_RenderClear(renderer);
        SDL_RenderPresent(renderer);
        SDL_Delay(1);       /* Keep CPU cool */
    }

    exitval = EXIT_SUCCESS;
    SDL_Log("Closing application\n");
    if (renderer)           SDL_DestroyRenderer(renderer);
    if (window)             SDL_DestroyWindow(window);
    SDL_Quit();

    SDL_Log("Bye.\n");
    return exitval;
}